Improvement in the mode of operating sewing and other machines



S;G;POSTER if MODE 0F OPERATING SEWING AND OTHER MACHINES.

N0.105,932. Patented Aug. 2,1870.

UNIT D- STATES PATENT ()FFICE.

I S. CONANT FOSTER, OF NEW YORK, N. Y.

IMPROVEMENT IN THE MODE 0F OPERATING SEWING AND OTHER MACHINES.

Specification forming part of Letters Patent No. 105,932, dated Adgnst2, 1870.

To all whom it may concern.-

Be it known that I, S. G. FOSTER, of the city, county, and State of NewYork, have invented certain new and useful Improvements in Means forOperating Sewingand other Machinery, of which the following is aspecification.

My invention relates to certain improvements in the mode of operatingsewing and other machines as a s'ubstitnte for the treadlemotion bywhich they. are' driven.

It consists in certain novel combinations and arrangements of parts, bywhich the operator can. preserve an erect position and drive the machineby the action of the strong muscles of the back, legs,and thighs,instead of by the muscles of the feet alone, as in the treadlemotion.

The object of this invention is to render the working of such machineryless injurious to the health of the operator by obviating any tendeucyto diseases to :which persons, especially females, running such machinesby treadles are more or less liable.

The accompanying drawing shows one of the side frames that support thetable B and the operative mechanism beneath it. The-extension C of oneframe forms a support for the seat ot' the operator, in connection withthe leg M. The backD of the seat is pivoted at d, and is secured to thelever E beneath it. This lever is connected with the lever G, pivoted atg, by the bar 1*,pivoted at e and f, the latter end being madeadjustable, so as to vary the throw of the lever G when required. Theend of the lever G is connected with the crank a upon the end of thedriving-shaft-that is held in the brackets H H by means of the link I,pivoted at'z'andj. The arrangementof these parts is such that as theback D of the seat is vibrated back and forth by the operator therequired rotary motion will'be imparted tothe driving-shaft. The table Bis pivoted to the side frames at b, and is provided with thenecessarymeans to enable it to be ad justed-and held at any angle tosuit the convenience of the operator, consisting of the slotted plate Kand set-screw h.

, The foot-rest L, against which the feet of I scribed devices, aninclined adjustable tableto support and adjust the machine totheconvenience ot' the operator and admitof an erect position of the body,substantially as described and specified. J

3. In combination with the he rein-described devices, an adjustable'foot' rest constructed and operating substantially as described and 4.The inclined adjustable table constructed and operating substantiallyinthe manner described and specified.

S.'CONANT FOSTER.

Witnesses:

. EDWARD E. OSBORN,

G. A. DURGIN.

